1/31/24, 12:47 PM
Quiz: Electrical and Communication Systems: AVIA230: Unmanned Aerial Systems (B02)
https://canvas.liberty.edu/courses/454799/quizzes/2227406
1/11
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Quiz: Electrical and Communication Systems
Due Jun 26, 2023 at 11:59pm Points 75 Questions 25
Time Limit 60 Minutes
This quiz is no longer available as the course has been concluded.
Attempt History
Attempt Time Score
LATEST Attempt 1 28 minutes 66 out of 75
Correct answers are hidden.
Score for this quiz: 66 out of 75
Submitted Jun 26, 2023 at 9:17pm
This attempt took 28 minutes.
0 / 3 pts
Question 1
Incorrect
Incorrect
Because the ESC generates ______, potentially considerable amounts
of it, providing adequate cooling is important, especially where the
controller incorporates the additional functionality of an integral BEC
amps
volts
heat
power
3 / 3 pts
Question 2
Online Residential Athletics Alumni Par
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Searc
Miguel Irizarry
1/31/24, 12:47 PM
Quiz: Electrical and Communication Systems: AVIA230: Unmanned Aerial Systems (B02)
https://canvas.liberty.edu/courses/454799/quizzes/2227406
2/11
Operators can control an aircraft from halfway around the world using
satellite communications, and it is common to do so. The drawback is
that:
range is limited
signicant signal delays may be encountered.
bandwidth is limited
the radio systems are not proven
3 / 3 pts
Question 3
There can be a signicant ____________ at the antenna–cable junction
if the cable and the antenna are not well matched.
reection
reaction
heating
power
0 / 3 pts
Question 4
Incorrect
Incorrect
_____________ results in a binary stream of data.
Amplication
Demodulation
FSK
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1/31/24, 12:47 PM
Quiz: Electrical and Communication Systems: AVIA230: Unmanned Aerial Systems (B02)
https://canvas.liberty.edu/courses/454799/quizzes/2227406
3/11
Transducer variance
3 / 3 pts
Question 5
A commonly used classication for data links is line-of-sight (LOS)
and beyond-lineof-sight (BLOS). In _______ systems the UAV is always
in line of sight with the GCS.
LOS
BLOS
VLOS
BVLOS
3 / 3 pts
Question 6
A __________ converts some of the horsepower developed by the
engine to power for the electrical system by providing relative motion
between a conductor (a winding consisting of multiple loops or turns
of wire) and a magnetic, usually electromagnetic, eld.
battery
belt
gear box
generator
3 / 3 pts
Question 7
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Quiz: Electrical and Communication Systems: AVIA230: Unmanned Aerial Systems (B02)
https://canvas.liberty.edu/courses/454799/quizzes/2227406
4/11
Because all the electrical systems require a __________ circuit through
which to conduct the current, a nonconductive structure presents
designers of composite UASs with a challenge not facing those
tasked with creating structures of metal.
open-loop
closed-loop
tripple-loop
nonconductive
0 / 3 pts
Question 8
Incorrect
Incorrect
All generators produce a(n) _________ output that must be either
mechanically or electronically rectied to DC.
alternating current
direct current
low voltage
high amperage
3 / 3 pts
Question 9
The _________________ technique is what is known as a spread
spectrum technique because it changes frequency of transmission in
a pseudorandom fashion as if to spread the energy over a larger
bandwidth.
voltagevariance
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Quiz: Electrical and Communication Systems: AVIA230: Unmanned Aerial Systems (B02)
https://canvas.liberty.edu/courses/454799/quizzes/2227406
5/11
frequency hopping
modulation variance
PSK
3 / 3 pts
Question 10
The rst step in designing an RF system for a UAS would be to decide
the _________ required for the application we have in mind.
antenna size
transmitting power
data rate
maximum range
3 / 3 pts
Question 11
To function, all aircraft electrical systems must have ____________
source of power
transducers
circuit boards
resistors
3 / 3 pts
Question 12
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Quiz: Electrical and Communication Systems: AVIA230: Unmanned Aerial Systems (B02)
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6/11
While passing through the space between antennas the signal
becomes very weak and needs to be amplied in a(n) _______________
very close to the antenna.
high power amplier
low-noise amplier
low signal antenna
high strength wire
3 / 3 pts
Question 13
____________ combines information with a carrier signal.
Antennas
Amplier
Modulation
Regulation
3 / 3 pts
Question 14
For a given UAS circuit, anticipated peak current ow, the maximum
voltage drop acceptable in the circuit, and conductor length, from bus
to component ground, are likely the most important factors in
selecting the correct __________
AWG wire size
PNG wire size
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Quiz: Electrical and Communication Systems: AVIA230: Unmanned Aerial Systems (B02)
https://canvas.liberty.edu/courses/454799/quizzes/2227406
7/11
wire length
wire material
3 / 3 pts
Question 15
Laboratory testing greatly improves the performance of the payload systems
and helps ensure their safe and effective operation in the eld. This step
occurs during which step in the design process?
Concept development and trade studies
Preliminary design review
Critical design review
Fabrication
System testing
Flight testing
3 / 3 pts
Question 16
When designing any UAS electrical system or installing a new
component, selecting a wire of suitable ____________ is critical to
satisfactory system operation and longevity.
length
cost
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Quiz: Electrical and Communication Systems: AVIA230: Unmanned Aerial Systems (B02)
https://canvas.liberty.edu/courses/454799/quizzes/2227406
8/11
diameter
color
3 / 3 pts
Question 17
One of the major drawbacks to LiPobatteries is the chance of a run
away chemical reaction. During this event the battery can _______
freeze
die
light on re
shrink in size
3 / 3 pts
Question 18
A(n) __________________ is one that radiates equally in all directions. It
is a hypothetical concept, one that does not exist in the real world
since it requires the existence of a point-source antenna that is
impossible to build.
antenna
directional antenna
omni-directional antenna
isotropic radiator
3 / 3 pts
Question 19
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Quiz: Electrical and Communication Systems: AVIA230: Unmanned Aerial Systems (B02)
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9/11
The smallest among sUAS are generally powered by ____________
combustion engines
turbine engines
electric motors
heavy fuel motors
3 / 3 pts
Question 20
Assuming a given level of opposition to current ow, known as
resistance and measured in ___________, the rate of electron
movement is a function of the amount of voltage, or energy, applied.
amps
volts
ohms
meters
3 / 3 pts
Question 21
___________ losses cannot be ignored and they form the bulk of the
losses of the link.
Antenna
Transmiter
Propagation
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Quiz: Electrical and Communication Systems: AVIA230: Unmanned Aerial Systems (B02)
https://canvas.liberty.edu/courses/454799/quizzes/2227406
10/11
Wire
3 / 3 pts
Question 22
In the United States, the civil regulatory authority for the RF spectrum
is _________________
NASA
FCC
FAA
FBI
3 / 3 pts
Question 23
A more positive EMI-suppression strategy is the use of ________ wire
or cable
shielded
thicker
heavier
insulated
3 / 3 pts
Question 24
The motor controller, also commonly known as a(n)
_________________________, is a microprocessor that acts as an
inverter/switching device to convert DC to a bidirectional pulsing
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Quiz: Electrical and Communication Systems: AVIA230: Unmanned Aerial Systems (B02)
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11/11
current (as opposed to a sinusoidal waveform) to provide the desired
voltage frequency and voltage amplitude to the motor.
electronic speed control
electronic speed unit
electric motor controller
motor control board
3 / 3 pts
Question 25
The radiated wave may arrive at the receiver via not only a direct path
but also other paths due to reection, refraction, and diffraction. What
is the term given to this occurrence?
multipath
double path
many-path
dipath
Quiz Score: 66 out of 75
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